What would you do?

Wife has a photo album with pictures of her past from high school and college, and has pictures of her with a ex-boyfriend, ie: sitting on his lap, kissing, laying in bed… Now I’ve known her long enough to not be bothered, BUT i now want her to get rid of them because i do not want our three year old daughter to come across them…She’s insisting I’m over reacting. My feeling is that even if she hides them real well now, eventually, like every snoopy child does, my little one will come across them even if she may be fourteen at the time, I feel its something better left to the imagination though stories.